fire one round at
the designated hour. At the first note of either the _National Anthem_
or _To the Color_, all dismounted persons face toward the color or
flag and render the prescribed salute from attention; the salute is
held until the last note of the music has been played. In the event
the flag cannot be seen and the location of the flag staff is unknown
to the person saluting, he faces toward the sound of the music.

At parades and reviews and on other occasions when uncased colors are
carried, all military personnel salute at six paces distance and hold
the salute until the color or standard is the same distance past. When
personal honors are being rendered to general or flag officers at a
review, all military personnel present and not in formation salute
during the ruffles, flourishes, and march. When a cannon salute is
given, personnel in the immediate vicinity conform to the actions of
the person being saluted. No salute is required during the 48 gun
salute to the Nation on the Fourth of July.

Military personnel also salute during the passing of a caisson or
hearse in a military funeral. If attending the services at the grave
side either as mourners or as honorary pallbearers, they stand at
attention with the head-dress over the left breast at any time the
casket is being moved, and during the service at the grave, including
the firing of the volleys and the sounding of _Taps_. In cold or
inclement weather, the head-dress is left on and the hand salute is
rendered during the movement of the casket, the firing of the volleys,
and the sound of _Taps_.

On ships having 180 or more men of the seaman branch, the side is
attended by side boys for visiting officers of our Armed Services,
except in civilian clothes, and for officers of the Foreign Service
when they come on board and depart. This courtesy is also extended to
commissioned officers of the armed services of foreign nations.
Officers of the rank of lieutenant to major inclusive are given two
side boys, from lieutenant colonel to colonel four side boys, from
brigadier to major general six side boys, and lieutenant general and
above eight side boys. Full guard and band are given to general
officers, and for a colonel the guard of the day but no music.

During the hours of darkness or low visibility an approaching boat is
usually hailed "Boat ahoy?" which corresponds to the sentry's
challenge, "Who goes there?" Some of the answers are as follows: